{"cveID":"CVE-2025-49706","vendorProject":"Microsoft","product":"SharePoint","vulnerabilityName":"Microsoft SharePoint Improper Authentication Vulnerability","dateAdded":"2025-07-22","shortDescription":"Microsoft SharePoint contains an improper authentication vulnerability that allows an authorized attacker to perform spoofing over a network. Successfully exploitation could allow an attacker to view sensitive information and make some changes to disclosed information. This vulnerability could be chained with CVE-2025-49704. CVE-2025-53771 is a patch bypass for CVE-2025-49706, and the updates for CVE-2025-53771 include more robust protection than those for CVE-2025-49706.","requiredAction":"Disconnect public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS) to include SharePoint Server 2013 and earlier versions. For supported versions, please follow the mitigations according to CISA (URL listed below in Notes) and vendor instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.","dueDate":"2025-07-23","knownRansomwareCampaignUse":"Known","notes":"CISA Mitigation Instructions: https://www.cisa.gov/news-events/alerts/2025/07/20/microsoft-releases-guidance-exploitation-sharepoint-vulnerability-cve-2025-53770 ; https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/ ; https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706 ; https://nvd.nist.gov/vuln/detail/CVE-2025-49706","cwes":["CWE-287"],"year":2025,"state":"mapped","stale_reasons":[],"mappings":[{"domain":"enterprise","cve":"CVE-2025-49706","technique":"T1190","technique_name_at_mapping":"Exploit Public-Facing Application","mapping_type":"exploitation_technique","capability_group":"access_ctrl","comments":"This improper authentication vulnerability in Microsoft SharePoint allows an attacker to send unauthenticated HTTP POST requests to the endpoint, which SharePoint will trust the request if constructed correctly. This gives the attacker access to the APIs despite the lack of credentials, as well as the ability to impersonate users and abuse native functionality.","references":["https://fidelissecurity.com/vulnerabilities/cve-2025-49706/"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"},{"domain":"enterprise","cve":"CVE-2025-49706","technique":"T1059.003","technique_name_at_mapping":"Windows Command Shell","mapping_type":"secondary_impact","capability_group":"access_ctrl","comments":"This improper authentication vulnerability in Microsoft SharePoint allows an attacker to send unauthenticated HTTP POST requests to the endpoint, which SharePoint will trust the request if constructed correctly. This gives the attacker access to the APIs despite the lack of credentials, as well as the ability to impersonate users and abuse native functionality.","references":["https://fidelissecurity.com/vulnerabilities/cve-2025-49706/"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"},{"domain":"enterprise","cve":"CVE-2025-49706","technique":"T1505","technique_name_at_mapping":"Server Software Component","mapping_type":"primary_impact","capability_group":"access_ctrl","comments":"This improper authentication vulnerability in Microsoft SharePoint allows an attacker to send unauthenticated HTTP POST requests to the endpoint, which SharePoint will trust the request if constructed correctly. This gives the attacker access to the APIs despite the lack of credentials, as well as the ability to impersonate users and abuse native functionality.","references":["https://fidelissecurity.com/vulnerabilities/cve-2025-49706/"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"}],"techniques":[{"id":"T1059.003","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Windows Command Shell","name_at_mapping":"Windows Command Shell","renamed":false,"revoked_by":null,"mapping_types":["secondary_impact"],"sigma_rule_count":46,"has_detection_strategy":true},{"id":"T1190","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Exploit Public-Facing Application","name_at_mapping":"Exploit Public-Facing Application","renamed":false,"revoked_by":null,"mapping_types":["exploitation_technique"],"sigma_rule_count":149,"has_detection_strategy":true},{"id":"T1505","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Server Software Component","name_at_mapping":"Server Software Component","renamed":false,"revoked_by":null,"mapping_types":["primary_impact"],"sigma_rule_count":1,"has_detection_strategy":true}],"mapping_types":["exploitation_technique","primary_impact","secondary_impact"],"has_exploitation_technique":true,"mapping_attack_versions":["16.1"],"mapping_domains":["enterprise"],"sigma_coverage":"full","sigma_rules_tagged_cve":[],"added_after_mapping_snapshot":false,"_source":"kevmap","_built":"2026-08-24 19:45 UTC","_attack_version":"19.2"}